/**
 * Copyright 2011 Honeywell Federal Manufacturing & Technologies, LLC. This material was produced under U.S. Government
 * contract DE-ACO4-01AL66850, Honeywell Federal Manufacturing & Technologies, LLC, (FM&T) with the U. S. Department of
 * Energy for the operation of the Kansas City Plant . The U.S. Government has rights to use, reproduce, and distribute
 * this software.  NEITHER THE GOVERNMENT NOR Honeywell Federal Manufacturing & Technologies, LLC, MAKES ANY WARRANTY,
 * EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE.  If software is modified to produce
 * derivative works, such modified software should be clearly marked, so as not to confuse it with the version available
 * from FM&T.
 *
 * Additionally, this program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License Version 3 published by the Free Software Foundation. Accordingly, this program is distributed in
 * the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this library.
 * If not, see http://www.gnu.org/licenses/.
 */
package org.braintrain.domain;

import javax.persistence.*;

@Embeddable
@AssociationOverrides({
        @AssociationOverride(name="deltaValue.next", joinColumns=@JoinColumn(name="deltaNext")),
        @AssociationOverride(name="deltaValue.prevSet", joinColumns= @JoinColumn(name="deltaNext", insertable=false, updatable=false))
})
public class DeltaNavigationBundle extends AbstractPushDelta<NavigationBundle>{
    private NavigationBundle value = new NavigationBundle();
    private NavigationBundle deltaValue = new NavigationBundle();
    
    @Embedded
    public NavigationBundle getValue() {
        return value;
    }

    public void setValue(NavigationBundle value) {
        this.value = value;
    }

    @Embedded
    public NavigationBundle getDeltaValue() {
        return deltaValue;
    }

    public void setDeltaValue(NavigationBundle deltaValue) {
        this.deltaValue = deltaValue;
    }
    
    @Transient
    public Navigation getNext()
    {
        return value.getNext();
    }
    
    @Transient
    public Navigation getDeltaNext()
    {
       return deltaValue.getNext();
    }

    @Transient
    public Navigation getPrev()
    {
        return value.getPrev();
    }
    
    @Transient
    public Navigation getDeltaPrev()
    {
       return deltaValue.getPrev();
    }

    @Transient
    public Navigation getRelevantPrev(boolean preferDelta) {
        if((preferDelta || this.getPrev() == null) && this.getDeltaPrev() != null)
        {
            return this.getDeltaPrev();
        }
        return this.getPrev();
    }

    @Transient
    public Navigation getRelevantNext(boolean preferDelta) {
        if((preferDelta || this.getNext() == null) && this.getDeltaNext() != null)
        {
            return this.getDeltaNext();
        }
        return this.getNext();
    }
}
